Java Chapter 9 Test Questions and Answers| Latest Update 100% Solved

Java Chapter 9 Test Questions and Answers|
Latest Update 100% Solved
What is the value of times displayed?


public class Test {public static void main(String[] args) {
Count myCount = new Count();
int times = 0;
for (int i=0; i<100; i++)
increment(myCount, times);
System.out.println("myCount.count = " + myCount.count);
System.out.println("times = "+ times);
}
public static void increment(Count c, int times) {
c.count++;times++;
}
}
class Count {
int count;
Count(int c) {
count = c;
}
Count() {
count = 1;
}

} ✔️✔️0

,What is the value of myCount.count displayed?


public class Test {
public static void main(String[] args) {
Count myCount = new Count();
int times = 0;
for (int i=0; i<100; i++)
increment(myCount, times);
System.out.println("myCount.count = " + myCount.count);
System.out.println("times = "+ times);
}
public static void increment(Count c, int times) {
c.count++;times++;
}
}
class Count {
int count;
Count(int c) {
count = c;
}
Count() {
count = 1;
}

} ✔️✔️101


Suppose the xMethod() is invoked in the following constructor in a class, xMethod() is
_________ in the class.

, public MyClass() {
xMethod();

} ✔️✔️a static method or an instance method



To prevent a class from being instantiated, _____________________ ✔️✔️use the private
modifier on the constructor.


Analyze the following code:


public class Test {
public static void main(String args[]) {
NClass nc = new NClass();
nc.t = nc.t++;
}
}


class NClass {
int t;
private NClass() {
}

} ✔️✔️The program has a compile error because the NClass class has a private constructor.


Analyze the following code and choose the best answer:


public class Foo {
private int x;